feat: add missing administration tools

Add 20+ new MCP tools for repository administration:

- Repository: get_repo, repo_write (edit/delete/transfer), list_forks
- Branch Protection: read (list/get) and write (create/edit/delete)
- Webhooks: read (list/get) and write (create/edit/delete/test)
- Collaborators: read (list) and write (add/delete)
- Deploy Keys: read (list/get) and write (create/delete)
- Topics: read (list) and write (add/delete/set)
- Compare: get_compare for branch/tag/commit comparison
- Organization: org_read (get/list_teams/get_team/list_team_members/list_team_repos)
  and org_write (create_team/delete_team/add_team_member/remove_team_member/add_team_repo/remove_team_repo)
- PR enhancements: list_files and is_merged methods added to pull_request_read

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

operation/pull/pull.go

@@ -40,8 +40,8 @@ var (
 
 	PullRequestReadTool = mcp.NewTool(
 		PullRequestReadToolName,
-		mcp.WithDescription("Get pull request information. Use method 'get' for PR details, 'get_diff' for diff, 'get_reviews'/'get_review'/'get_review_comments' for review data."),
-		mcp.WithString("method", mcp.Required(), mcp.Description("operation to perform"), mcp.Enum("get", "get_diff", "get_reviews", "get_review", "get_review_comments")),
+		mcp.WithDescription("Get pull request information. Use method 'get' for PR details, 'get_diff' for diff, 'get_reviews'/'get_review'/'get_review_comments' for review data, 'list_files' for changed files, 'is_merged' to check merge status."),
+		mcp.WithString("method", mcp.Required(), mcp.Description("operation to perform"), mcp.Enum("get", "get_diff", "get_reviews", "get_review", "get_review_comments", "list_files", "is_merged")),
 		mcp.WithString("owner", mcp.Required(), mcp.Description("repository owner")),
 		mcp.WithString("repo", mcp.Required(), mcp.Description("repository name")),
 		mcp.WithNumber("index", mcp.Required(), mcp.Description("pull request index")),
@@ -140,11 +140,85 @@ func pullRequestReadFn(ctx context.Context, req mcp.CallToolRequest) (*mcp.CallT
 		return getPullRequestReviewFn(ctx, req)
 	case "get_review_comments":
 		return listPullRequestReviewCommentsFn(ctx, req)
+	case "list_files":
+		return listPullRequestFilesFn(ctx, req)
+	case "is_merged":
+		return isPullRequestMergedFn(ctx, req)
 	default:
 		return to.ErrorResult(fmt.Errorf("unknown method: %s", method))
 	}
 }
 
+func listPullRequestFilesFn(ctx context.Context, req mcp.CallToolRequest) (*mcp.CallToolResult, error) {
+	log.Debugf("Called listPullRequestFilesFn")
+	args := req.GetArguments()
+	owner, err := params.GetString(args, "owner")
+	if err != nil {
+		return to.ErrorResult(err)
+	}
+	repoName, err := params.GetString(args, "repo")
+	if err != nil {
+		return to.ErrorResult(err)
+	}
+	index, err := params.GetIndex(args, "index")
+	if err != nil {
+		return to.ErrorResult(err)
+	}
+	page, pageSize := params.GetPagination(args, 30)
+
+	client, err := gitea.ClientFromContext(ctx)
+	if err != nil {
+		return to.ErrorResult(fmt.Errorf("get gitea client err: %v", err))
+	}
+	files, _, err := client.ListPullRequestFiles(owner, repoName, index, gitea_sdk.ListPullRequestFilesOptions{
+		ListOptions: gitea_sdk.ListOptions{
+			Page:     page,
+			PageSize: pageSize,
+		},
+	})
+	if err != nil {
+		return to.ErrorResult(fmt.Errorf("list PR files %v/%v#%v err: %v", owner, repoName, index, err))
+	}
+
+	out := make([]map[string]any, 0, len(files))
+	for _, f := range files {
+		out = append(out, map[string]any{
+			"filename":    f.Filename,
+			"status":      f.Status,
+			"additions":   f.Additions,
+			"deletions":   f.Deletions,
+			"changes":     f.Changes,
+		})
+	}
+	return to.TextResult(out)
+}
+
+func isPullRequestMergedFn(ctx context.Context, req mcp.CallToolRequest) (*mcp.CallToolResult, error) {
+	log.Debugf("Called isPullRequestMergedFn")
+	args := req.GetArguments()
+	owner, err := params.GetString(args, "owner")
+	if err != nil {
+		return to.ErrorResult(err)
+	}
+	repoName, err := params.GetString(args, "repo")
+	if err != nil {
+		return to.ErrorResult(err)
+	}
+	index, err := params.GetIndex(args, "index")
+	if err != nil {
+		return to.ErrorResult(err)
+	}
+	client, err := gitea.ClientFromContext(ctx)
+	if err != nil {
+		return to.ErrorResult(fmt.Errorf("get gitea client err: %v", err))
+	}
+	merged, _, err := client.IsPullRequestMerged(owner, repoName, index)
+	if err != nil {
+		return to.ErrorResult(fmt.Errorf("check PR merged %v/%v#%v err: %v", owner, repoName, index, err))
+	}
+	return to.TextResult(map[string]any{"merged": merged})
+}
+
 func pullRequestWriteFn(ctx context.Context, req mcp.CallToolRequest) (*mcp.CallToolResult, error) {
 	method, err := params.GetString(req.GetArguments(), "method")
 	if err != nil {